Here is a completed Granny Rectangle laid out on my queen size bed. This thing is a monster, the last two rows used an entire skein of yarn. It was a gift for a friend who is a USC grad and it has finally been gifted so now it can be posted.
I used this pattern: http://iamtotallyobsessedwithyarn.blogspot.com/2006/01/granny-square-pattern-with-pictures.html but I changed the way the corners were done. It seemed like there were too many shells in there for my taste.